Water reserves in the Balearic Islands stood at 37% in October, one percentage point higher than in September but seven points below the 44% recorded in the same month of 2025. The slight recovery follows an unusually wet month, with rainfall 33% above average. However, three areas of Mallorca remain on drought alert: Artà, es Pla and Manacor-Felanitx.

By island, Mallorca’s reserves have risen from 36% to 37% and Menorca’s from 38% to 39%, while Eivissa remains at 33%. Despite this improvement, reserves are still well below the levels recorded a year ago.

Three areas of Mallorca remain on drought alert

The hydrological drought index for the Balearic Islands rose from 0.342 in September to 0.371 in October, slightly above the figure recorded in October 2025 (0.349).

Water reserves in the Balearic Islands in October 2026

Currently, 22.5% of the Balearic Islands’ territory is under drought alert, covering the water demand management units of Artà, es Pla and Manacor-Felanitx. A further 75.9% remains on pre-alert, while only 1.6%, corresponding to Formentera, is classified as normal.

Two changes in drought status occurred during October. Migjorn improved from alert to pre-alert, while Tramuntana Sud moved from normal conditions to pre-alert. Menorca, Palma-Alcúdia, Tramuntana Nord and Eivissa also remain on pre-alert.

October brings 33% more rainfall than usual to the Balearic Islands

According to the Agencia Estatal de Meteorología (AEMET, Spanish State Meteorological Agency), October was a wet month across the archipelago, with average rainfall of 105 litres per square metre, compared with the usual 79 litres for this period.

The largest differences were recorded in the Pitiusas (Eivissa and Formentera). Eivissa received 232 litres per square metre, compared with an average of 77, while Formentera recorded 213 litres, almost five times its usual 44 litres.

Mallorca received 93 litres per square metre, compared with its average of 80. Menorca, meanwhile, recorded 62 litres, slightly below its average of 67.

Despite this rainfall, the total recorded across the Balearic Islands over the past twelve months stands at 98% of the historical average. Mallorca is at 97%, Menorca at 94% and the Pitiusas at 105%.

October was also warmer than usual, with an average temperature of 20°C, 1.2 degrees above normal.

Water reserves could increase in November

The Conselleria de la Mar i del Cicle de l’Aigua (Regional Ministry of the Sea and Water Cycle) expects water reserves to continue rising during November, given the current hydrological conditions and the time of year.

However, no changes in drought status are expected, meaning that Artà, es Pla and Manacor-Felanitx are likely to remain on alert.

The regional ministry continues to monitor water resources and stresses the importance of using water responsibly, particularly in areas facing more difficult conditions.